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Contents

Index

• Getting Started

• User's Guide

• Desktop Tools and Development Environment

• Data Import and Export

• Mathematics

• Arrays and Matrices

• Linear Algebra

• Elementary Math

• Trigonometric

• Exponential

• Rounding and Remainder

• Discrete Math

• Polynomials

• Interpolation and Computational Geometry

• Cartesian Coordinate System Conversion

• Nonlinear Numerical Methods

• Special Functions

• Sparse Matrices

• Math Constants

• Data Analysis

• Programming and Data Types

• Object-Oriented Programming

• 3-D Visualization

• GUI Development

• External Interfaces

• Release Notes

nthroot - Real nth root of real numbers

Syntax

y = nthroot(X, n)

Description

y = nthroot(X, n) returns the real nth root of the elements of X. Both X and n must be real and n must be a scalar. If X has negative entries, n must be an odd integer.

Examples

nthroot(-2, 3)

returns the real cube root of -2.

ans =

   -1.2599

By comparison,

(-2)^(1/3)

returns a complex cube root of -2.

ans =

   0.6300 + 1.0911i

See Also

power | sqrt

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